An examination of three Burmese chameleon amber specimens using 3D fluorescence spectroscopy.
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The first report of iridescent andradite from China.
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Zigzag lines are observed only with oblique light in a 55 ct aquamarine.
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A Guatemalan jade called yongchuliao has gained popularity among Chinese buyers.
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An Isognomon isognomon shell with a blister feature is examined at GIA in Mumbai.
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Gems from seven gemstone occurrences identified within the basaltic fields in southeast Vietnam are analyzed.
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An online survey assesses current colored stone preferences in consumers under 35.
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Reports on the analysis of a mantle eclogite xenolith with a partially exposed octahedral diamond.
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A look at the sustainability challenges and opportunities facing marine pearl farming using an Australian pearl farm as a case study.
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The Alumni Collective celebrates GIA alums who uphold GIA’s highest standards.
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past gems & gemology issues
Fall 2023
Volume 59, Issue 3
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Volume 59, Issue 2
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Volume 59, Issue 1
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